How do you factor the trinomial $m² - 18m - 40$ ?

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Answer 1 · 2018-06-11T08:00:34

$(m-20)(m+2)$

$"the factors of - 40 which sum to - 18 are - 20 and + 2"$

$m^2-18m-40=(m-20)(m+2)$

How do you factor the trinomial m² - 18m - 40m² - 18m - 40?